Automobile bumper foam device with shock-resistant layered structure

Abstract

The utility model provides an automobile bumper foam device with an anti-impact layered structure, which comprises a bumper connecting part, a carbon fiber clamping seat, a first foam layer, a second foam layer and a third foam layer, a foam mounting groove is arranged at the lower end of the bumper connecting part, and an ultrathin wear-resistant rubber sheet is fixed at the upper end of the inner side of the foam mounting groove. The anti-abrasion rubber side plates are arranged at the left end and the right end of the ultra-thin anti-abrasion rubber sheet, the convex elastic pieces are arranged between the ultra-thin anti-abrasion rubber sheet and the two anti-abrasion rubber side plates, and the carbon fiber clamping base is installed in the foam installation groove. According to the multi-layer foam bumper, through the design of a multi-layer foam structure, the shock resistance and the energy absorption capacity of foam can be improved, the shock resistance and the safety of the automobile bumper can be remarkably improved, and meanwhile the weight and the cost are reduced.

Description

Technical Field

[0001] The utility model relates to an automobile bumper foam device with an impact-resistant layered structure, belonging to the technical field of bumper equipment. Background Art

[0002] The main function of bumper foam is to act as an intermediary material to absorb the energy generated by the impact during a low-speed collision, so as to prevent the object from directly colliding with the car body and causing high repair costs; and to absorb part of the kinetic energy during a low-speed collision to protect pedestrian safety as much as possible. In addition, the use of foam material can also reduce the total weight of the vehicle to a certain extent, thereby achieving the effect of reducing fuel consumption.

[0003] However, the current bumper foams are made of soft materials and cannot disperse part of the impact force, and cannot effectively disperse the impact force. There is an urgent need for a car bumper foam device with an impact-resistant layered structure to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a car bumper foam device with an impact-resistant layered structure to solve the problems raised in the above-mentioned background technology. The utility model can improve the impact resistance and energy absorption capacity of the foam through the multi-layer foam structure design, and can also significantly improve the impact resistance and safety of the car bumper while reducing weight and cost.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a car bumper foam device with an impact-resistant layered structure, including a bumper connecting part, a carbon fiber clip seat, a first foam layer, a second foam layer and a third foam layer, a foam mounting groove is opened at the lower end of the bumper connecting part, an ultra-thin wear-resistant rubber sheet is fixed to the upper end of the inner side of the foam mounting groove, wear-resistant rubber side panels are provided on the left and right ends of the ultra-thin wear-resistant rubber sheet, a convex spring sheet is provided between the ultra-thin wear-resistant rubber sheet and the two wear-resistant rubber side panels, the carbon fiber clip seat is installed in the foam mounting groove, and the upper end of the carbon fiber clip seat is against the convex spring sheet, the interior of the carbon fiber clip seat is provided with a first foam layer, a second foam layer and a third foam layer from top to bottom, carbon fiber connecting plates are fixed on the left and right sides of the carbon fiber clip seat, and a protective outer cover is provided at the lower end of the third foam layer.

[0006] Furthermore, bumper connecting plates are installed on the upper ends of the left and right sides of the bumper connecting part.

[0007] Furthermore, the two wear-resistant rubber side panels are fitted and fixed to the left and right inner walls of the foam installation groove.

[0008] Furthermore, the first foam layer, the second foam layer, the third foam layer and the two carbon fiber connecting plates are bonded and fixed by a high-strength adhesive.

[0009] Furthermore, rivets are installed at the left and right connecting portions of the first foam layer, the second foam layer and the third foam layer.

[0010] Furthermore, the first foam layer is low-density polyurethane foam, the second foam layer is medium-density polypropylene foam, and the third foam layer is high-density polyurethane foam.

[0011] Furthermore, the density of the third foam layer is higher than that of the second foam layer, the density of the second foam layer is higher than that of the first foam layer, the thickness of the first foam layer is thicker than that of the second foam layer, and the thickness of the second foam layer is thicker than that of the third foam layer.

[0012] The beneficial effects of the present invention: The present invention is a car bumper foam device with an impact-resistant layered structure. Because the present invention adds ultra-thin wear-resistant rubber sheets, wear-resistant rubber side panels, convex spring pieces, carbon fiber clips, carbon fiber connecting plates, a first foam layer, a second foam layer, a third foam layer, rivets and high-strength adhesives, our design improvements and actual use have shown that the device has a reasonable structure and good practicality. Through the multi-layer foam structure design, the impact resistance and energy absorption capacity of the foam are improved. The density is gradually reduced from the outer layer to the inner layer to ensure that the impact energy is absorbed layer by layer, reducing the impact force transmitted to the car body. The thickness is gradually increased from the outer layer to the inner layer to ensure that each layer can effectively absorb and disperse the impact energy. At the same time, carbon fiber is embedded in key parts to improve local rigidity and impact resistance. It can also significantly improve the impact resistance and safety of the car bumper while reducing weight and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of an automobile bumper foam device with an impact-resistant layered structure according to the utility model;

[0015] Figure 2 This is a disassembled schematic diagram of an automobile bumper foam device with an impact-resistant layered structure according to the utility model;

[0016] Figure 3 The utility model is a cross-sectional schematic diagram of an automobile bumper foam device with an impact-resistant layered structure.

[0017] In the figure: 1-bumper connecting piece, 2-bumper connecting part, 3-foam mounting groove, 4-ultra-thin wear-resistant rubber sheet, 5-wear-resistant rubber side panel, 6-convex spring piece, 7-carbon fiber clip seat, 8-carbon fiber connecting plate, 9-first foam layer, 10-second foam layer, 11-third foam layer, 12-rivet, 13-protective cover, 14-high-strength adhesive. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figure 1-Figure 3 The utility model provides a technical solution: a car bumper foam device with an impact-resistant layered structure, including a bumper connecting part 2, a carbon fiber clip seat 7, a first foam layer 9, a second foam layer 10 and a third foam layer 11. The lower end of the bumper connecting part 2 is provided with a foam mounting groove 3, an ultra-thin wear-resistant rubber sheet 4 is fixed to the upper end of the inner side of the foam mounting groove 3, and the ultra-thin wear-resistant rubber sheet 4 is provided with wear-resistant rubber side panels 5 on the left and right ends. A convex spring piece 6 is provided between the ultra-thin wear-resistant rubber sheet 4 and the two wear-resistant rubber side panels 5. The fiber connector 7 is installed in the foam mounting groove 3, and the upper end of the carbon fiber connector 7 is against the convex spring piece 6. The inside of the carbon fiber connector 7 is provided with a first foam layer 9, a second foam layer 10 and a third foam layer 11 from top to bottom. Carbon fiber connecting plates 8 are fixed on the left and right sides of the carbon fiber connector 7. A protective outer cover 13 is provided at the lower end of the third foam layer 11. This design solves the problem that the current bumper foam is made of a soft material and cannot disperse part of the impact force, and cannot effectively disperse the impact force.

[0020] As a first embodiment of the present invention, bumper connecting plates 1 are installed at the upper ends of both the left and right sides of the bumper connecting portion 2. The addition of bumper connecting plates 1 facilitates installation between the bumper connecting portion 2 and the vehicle bumper. Two wear-resistant rubber side panels 5 are fixedly attached to the left and right inner walls of the foam mounting groove 3. The addition of the two wear-resistant rubber side panels 5 prevents the left and right sides of the convex spring piece 6 from directly contacting the inner walls of the foam mounting groove 3. The first foam layer 9, the second foam layer 10, the third foam layer 11, and the two carbon fiber connecting plates 8 are bonded and fixed using a high-strength adhesive 14. The addition of the high-strength adhesive 14 ensures the secure connection between the first foam layer 9, the second foam layer 10, the third foam layer 11, and the two carbon fiber connecting plates 8. Rivets 12 are installed at the left and right joints of the first foam layer 9, the second foam layer 10, and the third foam layer 11. The addition of the rivets 12 improves the secure connection between the left and right sides of the first foam layer 9, the second foam layer 10, and the third foam layer 11.

[0021] The first foam layer 9 is low-density polyurethane foam, the second foam layer 10 is medium-density polypropylene foam, and the third foam layer 11 is high-density polyurethane foam. The added first foam layer 9 is low-density polyurethane foam with good energy absorption capacity. As the innermost protective layer, the second foam layer 10 is medium-density polypropylene foam with good heat resistance and chemical resistance. As the second protective layer, the third foam layer 11 is high-density polyurethane foam with good elasticity and durability. As the outermost protective layer, the density of the third foam layer 11 is higher than that of the second foam layer 10, and the density of the second foam layer 10 is higher than that of the first foam layer 9. The thickness of the first foam layer 9 is thicker than that of the second foam layer 10, and the thickness of the second foam layer 10 is thicker than that of the third foam layer 11.

[0022] As the second embodiment of the present utility model: the third foam layer 11 is a high-density polyurethane foam with good elasticity and durability, serving as the outermost protective layer; the second foam layer 10 is a medium-density polypropylene foam with good heat resistance and chemical resistance; the first foam layer 9 is a low-density polyurethane foam with good energy absorption capacity, serving as the innermost protective layer; wherein the device is designed in a layered manner, with the density gradually decreasing from the outer layer to the inner layer (from the outside to the inside, the third foam layer 11, the second foam layer 10 and the first foam layer 9), ensuring that the impact energy is absorbed layer by layer, reducing the impact force transmitted to the vehicle body, and gradually increasing the thickness from the outer layer to the inner layer, ensuring that each layer can effectively absorb and disperse the impact energy.

[0023] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0024] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A car bumper foam device with an impact-resistant layered structure, comprising a bumper connecting portion (2), a carbon fiber adapter (7), a first foam layer (9), a second foam layer (10), and a third foam layer (11), characterized in that: A foam mounting groove (3) is provided at the lower end of the bumper connecting portion (2), an ultra-thin wear-resistant rubber sheet (4) is fixed to the upper end of the inner side of the foam mounting groove (3), wear-resistant rubber side panels (5) are provided at the left and right ends of the ultra-thin wear-resistant rubber sheet (4), and a convex spring sheet (6) is provided between the ultra-thin wear-resistant rubber sheet (4) and the two wear-resistant rubber side panels (5); The carbon fiber clamping seat (7) is installed in the foam installation groove (3), and the upper end of the carbon fiber clamping seat (7) is against the convex spring piece (6). The interior of the carbon fiber clamping seat (7) is provided with a first foam layer (9), a second foam layer (10) and a third foam layer (11) from top to bottom. Carbon fiber connecting plates (8) are fixed on the left and right sides of the carbon fiber clamping seat (7), and a protective outer cover (13) is provided at the lower end of the third foam layer (11).

2. The automobile bumper foam device with an impact-resistant layered structure according to claim 1, characterized in that: Bumper connecting pieces (1) are installed on the upper ends of the left and right sides of the bumper connecting portion (2).

3. The automobile bumper foam device with an impact-resistant layered structure according to claim 1, characterized in that: The two wear-resistant rubber side panels (5) are fitted and fixed to the left and right inner walls of the foam installation groove (3).

4. The automobile bumper foam device with an impact-resistant layered structure according to claim 1, characterized in that: The first foam layer (9), the second foam layer (10), the third foam layer (11) and the two carbon fiber connecting plates (8) are bonded and fixed by a high-strength adhesive (14).

5. The automobile bumper foam device with an impact-resistant layered structure according to claim 1, characterized in that: Rivets (12) are installed at the left and right connection points of the first foam layer (9), the second foam layer (10) and the third foam layer (11).

6. The automobile bumper foam device with an impact-resistant layered structure according to claim 1, characterized in that: The first foam layer (9) is low-density polyurethane foam, the second foam layer (10) is medium-density polypropylene foam, and the third foam layer (11) is high-density polyurethane foam.

7. The automobile bumper foam device with an impact-resistant layered structure according to claim 6, characterized in that: The density of the third foam layer (11) is higher than that of the second foam layer (10), the density of the second foam layer (10) is higher than that of the first foam layer (9), the thickness of the first foam layer (9) is thicker than that of the second foam layer (10), and the thickness of the second foam layer (10) is thicker than that of the third foam layer (11).

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